<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container {
            width: 300px;
            height: 1000px;
            border: 1px solid;
            /* position: relative; */
        }

        .box {
            width: 100px;
            height: 100px;
            background-color: red;

            /* 绝对定位 (0,0) 在浏览器最左上角*/
            /* position: absolute;
            left: 0;
            top: 0; */

            /* 原本位置 */
            /* position: relative;
            left: 50px;
            top: 0; */

            margin: auto;
            /* 非静态 static 定位，元素会以包含它，离它最近的非静态定位元素(0,0) 点移动 */

        }

        .blue {
            width: 50px;
            height: 50px;
            background-color: skyblue;

            /* position: absolute;
            left: 0;
            top: 0; */
        }

        a {
            /* 固定定位，以浏览器（0，0） 点 */
            position: fixed;
            bottom: 20px;
            right: 20px;
        }

        .info {
            width: 600px;
            height: 473px;
            border: 1px solid;
            position: relative;
        }

        .tra {
            width: 50px;
            height: 25px;
            /* border: 1px solid; */
            /* background-color: red; */
            position: absolute;
            left: 50px;
            bottom: 0;
            background-image: url('../Disney/img/icon.png');
            background-position: 0 -194px;
        }

        /* 蒙版 模态框 */
        .content {
            width: 600px;
            height: 473px;
            border: 1px solid;
            position: relative;
            /* 溢出隐藏 */
            overflow: hidden;
        }

        .mb {
            width: 100%;
            height: 100px;
            /* background-color: rgb(255, 0, 0); */
            /* a 透明度 0-1 */
            background-color: rgba(255, 0, 0, 0.3);
            position: absolute;
            left: 0px;
            bottom: 0;
            transition: all linear .5s;
        }

        .content:hover .mb {
            bottom: -100px;
        }

        .circle {
            width: 100px;
            height: 100px;
            background-color: red;
            /* background-image: url('../Disney/img/160113121641905797.jpg'); */
            /* background-attachment: fixed; */
            /* background: color url no-repeat position/size; */
            /* background-size: 100px 200px; */
            /* background: linear-gradient(to right, red, yellow); */
            /* background: linear-gradient(45deg, red, yellow); */
            background: radial-gradient(red, yellow);
            cursor: pointer;
            /* box-shadow: x 偏移量 y 偏移量 模糊值 （外延值） 颜色; */
            box-shadow: 5px 0 10px green;
        }
    </style>
</head>

<body>
    <a href="">123</a>

    <div class="circle"></div>

    <div class="info">
        <img src="../Disney/img/160113121641905797.jpg" alt="">
        <div class="tra"></div>
    </div>


    <div class="content">
        <img src="../Disney/img/160113121641905797.jpg" alt="">
        <div class="mb"></div>
    </div>


    <!-- <div class="container">
        <div class="box">
            <div class="blue"></div>
        </div>
    </div> -->


    <!-- <a href="">返回顶部</a> -->

    <!-- 元素重叠 -->



</body>

</html>